76421573 has 4 divisors (see below), whose sum is σ = 76452288. Its totient is φ = 76390860.

The previous prime is 76421563. The next prime is 76421599. The reversal of 76421573 is 37512467.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 76421573 - 2⁴ = 76421557 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (76421563) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11261 + ... + 16722.

It is an arithmetic number, because the mean of its divisors is an integer number (19113072).

Almost surely, 2^76421573 is an apocalyptic number.

It is an amenable number.

76421573 is a deficient number, since it is larger than the sum of its proper divisors (30715).

76421573 is a wasteful number, since it uses less digits than its factorization.

76421573 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30714.

The product of its digits is 35280, while the sum is 35.

The square root of 76421573 is about 8741.9433194227. The cubic root of 76421573 is about 424.3641203597.

The spelling of 76421573 in words is "seventy-six million, four hundred twenty-one thousand, five hundred seventy-three".